Retekess TW102 Window Intercom,8M Cable with Outer Speaker,Loud Speaker,Connect Wireless Mic,Intercom System for Office,Hotel,Museum,Medical Center

* 8M external microphone; can meet the needs of longer distance; no longer have to worry about the trouble caused by insufficient cable length * Connect wireless microphone; window intercom can realize wireless communication; avoid wire constraints; bring more freedom to the staff * High power output;two-way speaker adopts high power input and output technology; loud sound; clear sound quality * Two-way voice intercom communications technology; automatic identification of processing speech signals during a call does not require any action * Using a 4 core high-strength aluminum foil shielded wire; strong anti-interference ability; which makes the voice clear and natural